3GS
SUNISO 3GS Oil – Specifications

Type
    •    Highly refined mineral refrigeration oil

Viscosity
    •    ISO Grade: ISO VG 32
    •    Kinematic viscosity @ 40 °C: ≈ 32 cSt
    •    Kinematic viscosity @ 100 °C: ≈ 5.4 cSt

Pour Point
    •    ≤ –40 °C

Flash Point
    •    ≈ 190–200 °C

Density
    •    ≈ 0.88 g/cm³ @ 15 °C

Moisture Content
    •    ≤ 30 ppm

Applications
    •    Medium / low temperature refrigeration
    •    Reciprocating & rotary compressors
    •    R-12, R-22, R-502 systems
 

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4GS
SUNISO 4GS Oil – Specifications

Type
    •    Highly refined mineral refrigeration oil

Viscosity
    •    ISO Grade: ISO VG 68
    •    Kinematic viscosity @ 40 °C: ≈ 68 cSt
    •    Kinematic viscosity @ 100 °C: ≈ 8.7 cSt

Pour Point
    •    ≤ –35 °C

Flash Point
    •    ≈ 210–220 °C

Density
    •    ≈ 0.89 g/cm³ @ 15 °C

Moisture Content
    •    ≤ 30 ppm

Applications
    •    Higher load / higher temperature compressors
    •    Larger refrigeration systems
    •    R-12, R-22, R-502 systems


⚠️ Important Notes
    •    NOT compatible with HFC refrigerants (R-134a, R-404A, R-410A).
    •    For HFC systems, use POE oil instead.
    •    Always check compressor manufacturer recommendation before substitution.